They laze around — and regret it

I'm a big proponent of just chilling out over the weekend. It's definitely a great way to unwind. But if your slothfulness is making you bored or bummed out — or causing you to neglect important errands and chores — you may want to re-think how you spend your Saturdays and Sundays.

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They don't relax

At the other end of the spectrum are people who pack too much into their weekend schedule.

In order to be productive, and therefore successful, at work, it's important to use the weekend to recharge your batteries. If your weekends include zero downtime, you'll never feel rested or refreshed, which can be detrimental to your success.

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They don't prepare for the week ahead

Sunday nights are the perfect time to plan for the week ahead. You can make a to-do list; update or review your calendar; or just think about what it is you'd like to accomplish in the coming days. Unsuccessful people fail to do any of the above.